The SG91R Servo Motor is a compact 9g micro servo designed for small robotics, Arduino projects, RC planes, and DIY automation builds. Similar in size to the SG90 but offering stable performance with slightly improved durability, it’s a favorite choice for Bangladeshi students, hobbyists, and makers. With an operating range of about 180° rotation, it’s perfect for robot arms, steering mechanisms, and lightweight robotic cars. Easy to use with Arduino, ESP32, Raspberry Pi, and RC systems, the SG91R delivers precision control at a very affordable cost.